Pair Tung Sol 6550 KT88 Solid Gray Plate RCA Branded Vacuum Tube
Item History & Price
| Reference Number: Avaluer:7059428 | Model: 6550 |
| Brand: RCA | MPN: 6550 |
| Type: Vacuum Tube |
DESCRIPTION:Pair Tung Sol 6550 KT88 Gray Plate RCA Branded Vacuum TubeHalo Getter on two sides and one on top LOW FLASHING ConditionTube: Used Tested Good Box: Plain Lettering: within 90%Metal base with a slight imperfection & corrosionIf you buy additional set insurance will be add it Matching Date Code: 6352TESTED IN A HICKOK 752A1) Filament 2) checked for shorts, Leakage 3) Grid (Gas)&nb...sp;4) Emission Test Good 5) Dynamic Mutual Conductance The result on setting for KT88 Tube 1/2( 375 & 370 GM) Minimum Value = 225 GMGM X20 = 7500 & 7400 µmhos Minimum is 4500Where NOS about=6923 µmhos6) Useful Life in Tube 100%+
Unfortunately, most Tube testers do not test these tubes at anywhere near their normal operating parameters and have trouble testing these tubes accurately. The 6550 pushes the limits of any service grade tube tester These tubes run at higher voltages and currents than the Hickok can provide.Also Tested on others Hickok 752A, 6000/A, TV-7D/U and B&K 707 all testing above nominal Value. Two testers are never the same. So this shows what I get, and what you get may be slightly different.If I state any values they are for a guide only.No guarantee is made that any tube will test to a specific value in the buyer?s tube tester, most all tubes are tested on at least two tube testersThis because of the variation in line voltage, different bias, and circuits. Return PolicyGuarantee:Contact UsIf you're in any way dissatisfied with your purchase, do not hesitate to contact us through "MY MESSAGES". We will do our best to solve it for you. We are committed to ensuring that you are completely satisfied with every transaction.So Please DO contact us first to get a better solution before you would leave Negative or Neutral feedback.
